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Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG575392244

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG575392244

Diamond specifications and retailer prices

From £226 GBP
As of November 2, 2026
Save £1,095 GBP (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,321 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG575392244 or 575392244. Listed at 6 retailers as of November 2, 2026, with prices from £226 to £1,321, a £1,095 spread on the same certified stone. Do Amore Diamonds lists it at £1,321. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG575392244
Dimensions7.22 × 5.85 × 3.90 mm
L/W Ratio1.23
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.22 mm5.85 mm1.28 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG575392244
Side View
Table 59.5%Crown 33.7°Girdle: MED-STKPavilion 37.3°CuletDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,321 GBP|Low: £226 GBP|High: £1,373 GBP|Avg: £653 GBP|-3.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 2£226 GBP
Retailer 5£302 GBP
Retailer 3£461 GBP
Retailer 4£883 GBP
Do Amore Diamonds£1,321 GBP

34 data points across 5 retailers

6 retailers£226 GBP to £1,321 GBP

A
Cheapest Retailer
-
£226 GBP
A
Retailer 2
-
£302 GBP
$404 USD
View
B+
Retailer 3
-
£369 GBP
$495 USD
View
B+
Retailer 4
-
£461 GBP
A$951 AUD
View
B
Retailer 5
-
£883 GBP
View
Most Expensive
B
Do Amore Diamonds
27-2E4D485E2 · Nov 2
£1,321 GBP
$1,770 USD
View
5 more retailers have this diamond
Prices start from £226 GBPSave up to £1,095 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.28ct Cushion
£226 GBP